Patent US821393A successfully refreshed from Google Patents.
US821393A
Expired / Lapsed
US
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Flying-machine.
Assignee: Individual
•
Filing: 1903-03-23
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Granted: 1906-05-22
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Expires: 1923-03-23
Abstract
No abstract record available.
Inventors
- 👤 Orville Wright
- 👤 Wilbur Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:58
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/52; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1909-05-21 | 1909-11-20 | 1910-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-05-21 | 1913-11-20 | 1914-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-05-21 | 1917-11-20 | 1918-05-22 | $7700.00 | Window Closed / Lapsed |